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Exam AWS Certified Advanced Networking - Specialty ANS-C01 topic 1 question 167 discussion

Exam question from Amazon's AWS Certified Advanced Networking - Specialty ANS-C01
Question #: 167
Topic #: 1
[All AWS Certified Advanced Networking - Specialty ANS-C01 Questions]

A company recently experienced an IP address exhaustion event in its VPCs. The event affected service capacity. The VPCs hold two or more subnets in different Availability Zones.

A network engineer needs to develop a solution that monitors IP address usage across resources in the VPCs. The company needs to receive notification about possible issues so that the company can act before an incident happens.

Which solution will meet these requirements with the LEAST operational overhead?

  • A. Set up Amazon VPC IP Address Manager (IPAM) with a new top-level pool. In the top-level pool, create a pool for each VPC. In each VPC pool, create a pool for each subnet in that VPC. Turn on the auto-import option for the VPC pools and the subnet pools. Configure an Amazon CloudWatch alarm to send an Amazon Simple Notification Service (Amazon SNS) notification if the availability limit threshold is reached.
  • B. Set up a log group in Amazon CloudWatch Logs for each subnet. Create an AWS Lambda function that reads each subnet's IP address usage and publishes metrics to the log group. Configure an Amazon CloudWatch alarm to send an Amazon Simple Notification Service (Amazon SNS) notification if the availability limit threshold is reached.
  • C. Set up a custom Amazon CloudWatch metric for IP address usage for each subnet. Create an AWS Lambda function that reads each subnet's IP address usage and publishes a CloudWatch metric dimension. Schedule the Lambda function to run every 5 minutes. Configure a CloudWatch alarm to send an Amazon Simple Notification Service (Amazon SNS) notification if the availability limit threshold is reached.
  • D. Set up Amazon VPC IP Address Manager (IPAM) with a new top-level pool. In the top-level pool, create a pool for each VPC. In each VPC pool, create a pool for each subnet in that VPC. Turn on the auto-import option for the VPC pools and the subnet pools. Configure an Amazon EventBridge rule that monitors each pool availability limit threshold and sends an Amazon Simple Notification Service (Amazon SNS) notification if the limit threshold is reached.
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Suggested Answer: A 🗳️
by ISSDoksim at July 27, 2023, 11:20 a.m.
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Certified101
Highly Voted 10 months, 2 weeks ago
Selected Answer: A
A is correct - no need for eventbridge as it integrates with cloudwatch already
upvoted 5 times
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GaryQian
Most Recent 4 months ago
Selected Answer: A
Yes it must be A
upvoted 2 times
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Marfee400704
4 months, 1 week ago
I think that it's correct answer is C.
upvoted 1 times
...
ISSDoksim
10 months, 3 weeks ago
A https://docs.aws.amazon.com/vpc/latest/ipam/cloudwatch-ipam.html
upvoted 4 times
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